package com.example.demo1.customer;

import com.example.demo1.exception.NotFoundException;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Objects;
import org.slf4j.Logger;

    @Service
    public class CustomerService {

    private final static Logger LOGGER = LoggerFactory.getLogger(CustomerService.class);

    private final CustomerRepository customerRepository;
    @Autowired
    public CustomerService(CustomerRepository customerRepository){
        this.customerRepository = customerRepository;
    }
    List<Customer> getCustomers(){
        LOGGER.info("getCustomers called");
        return customerRepository.findAll();
    }
    Customer getCustomer(Long id) {
    return customerRepository
            .findById(id)

            .orElseThrow(()->{
                NotFoundException notFoundException = new NotFoundException("customer " + id + " 无法找到目标文件");
                LOGGER.error("error: getCustomer {}:" + id, notFoundException);
                return notFoundException;
            });
}
}
